Buggy code:
Paragraph para = outputDocument . addParagraph ( null ) ; Table table = outputDocument . addTable ( 1 , 1 ) ; Cell cell = table . getCellByPosition ( 0 , 0 ) ; Border border = new Border ( Color . BLACK , 0 , SupportedLinearMeasure . PT ) ; cell . setBorders ( NONE , border ) ; cell . setStringValue ( alert . getAlert ( ) ) ; cell . setFont ( AlertReportExportODT . fontTitleBold ) ; String color = Color . toSixDigitHexRGB ( "#87cefa" ) ; cell . setCellBackgroundColor ( Color . valueOf ( color ) ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; para = outputDocument . addParagraph ( AlertReportExportODT . extension . getMessages ( ) . getString ( "alertreport.export.message.export.pdf.description" ) ) ; para . setFont ( AlertReportExportODT . fontTitleBold ) ; para . setHorizontalAlignment ( LEFT ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; para = outputDocument . addParagraph ( AlertReportExportODT . getFieldAlertProperty ( alert . getPluginId ( ) , "description" , alert . getDescription ( ) , AlertReportExportODT . extension ) ) ; para . setFont ( AlertReportExportODT . fontText ) ; para . setHorizontalAlignment ( JUSTIFY ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; para = outputDocument . addParagraph ( AlertReportExportODT . extension . getMessages ( ) . getString ( "alertreport.export.message.export.pdf.risk" ) ) ; para . setFont ( AlertReportExportODT . fontTitleBold ) ; para . setHorizontalAlignment ( LEFT ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; para = outputDocument . addParagraph ( AlertReportExportODT . getFieldAlertProperty ( alert . getPluginId ( ) , ( "risk." + ( String . valueOf ( alert . getRisk ( ) ) ) ) , Alert . MSG_RISK [ alert . getRisk ( ) ] , AlertReportExportODT . extension ) ) ; para . setFont ( AlertReportExportODT . fontText ) ; para . setHorizontalAlignment ( JUSTIFY ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; para = outputDocument . addParagraph ( AlertReportExportODT . extension . getMessages ( ) . getString ( "alertreport.export.message.export.pdf.reability" ) ) ; para . setFont ( AlertReportExportODT . fontTitleBold ) ; para . setHorizontalAlignment ( LEFT ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; para = outputDocument . addParagraph ( AlertReportExportODT . getFieldAlertProperty ( alert . getPluginId ( ) , ( "reliability." + ( String . valueOf ( alert . getReliability ( ) ) ) ) , Alert . MSG_RELIABILITY [ alert . getReliability ( ) ] , AlertReportExportODT . extension ) ) ; para . setFont ( AlertReportExportODT . fontText ) ; para . setHorizontalAlignment ( JUSTIFY ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; para = outputDocument . addParagraph ( AlertReportExportODT . extension . getMessages ( ) . getString ( "alertreport.export.message.export.pdf.urls" ) ) ; para . setFont ( AlertReportExportODT . fontTitleBold ) ; para . setHorizontalAlignment ( LEFT ) ; for ( int i = 0 ; i < ( alerts . size ( ) ) ; i ++ ) { Alert alertAux = alerts . get ( i ) ; para = outputDocument . addParagraph ( ( ( ( i + 1 ) + "-" ) + ( alertAux . getUri ( ) ) ) ) ; para . setFont ( AlertReportExportODT . fontText ) ; para . setHorizontalAlignment ( LEFT ) ; para . applyHyperlink ( new URI ( alertAux . getUri ( ) ) ) ; if ( ! ( alertAux . getParam ( ) . isEmpty ( ) ) ) { para = outputDocument . addParagraph ( ( ( ( AlertReportExportODT . extension . getMessages ( ) . getString ( "alertreport.export.message.export.pdf.parameters" ) ) + ":<seq2seq4repair_space>" ) + ( alertAux . getParam ( ) ) ) ) ; para . setFont ( AlertReportExportODT . fontText ) ; para . setHorizontalAlignment ( LEFT ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; } <START_BUG> if ( ! ( alertAux . getAttack ( ) . isEmpty ( ) ) ) { <END_BUG> para = outputDocument . addParagraph ( AlertReportExportODT . extension . getMessages ( ) . getString ( "alertreport.export.message.export.pdf.attack" ) ) ; para . setFont ( AlertReportExportODT . fontTitleBold ) ; para . setHorizontalAlignment ( LEFT ) ; para = outputDocument . addParagraph ( alertAux . getAttack ( ) ) ; para . setFont ( AlertReportExportODT . fontText ) ; para . setHorizontalAlignment ( LEFT ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; } AlertReportExportODT . addLines ( outputDocument , 1 ) ; String images = alertAux . getOtherInfo ( ) ; if ( ! ( images . isEmpty ( ) ) ) { String [ ] list = images . split ( "\n" ) ; int imageCount = 1 ; for ( int j = 0 ; j < ( list . length ) ; j ++ ) { if ( ! ( ( j + 1 ) >= ( list . length ) ) ) { String step = list [ j ] ; para = outputDocument . addParagraph ( step ) ; para . setFont ( AlertReportExportODT . fontText ) ; para . setHorizontalAlignment ( JUSTIFY ) ; AlertReportExportODT . addLines ( outputDocument , 1 ) ; String imageName = "" ; String path = AlertReportExportODT . extension . getParams ( ) . getWorkingDirImages ( ) ; if ( ( ( j + 1 ) < ( list . length ) ) && ( ! ( list [ ( j + 1 ) ] . isEmpty ( ) ) ) ) { imageName = list [ ( j + 1 ) ] ; try { if ( ( ( imageName . endsWith ( ".png" ) ) || ( imageName . endsWith ( ".jpg" ) ) ) && ( ! ( path . isEmpty ( ) ) ) ) { para = outputDocument . addParagraph ( null ) ; para . setHorizontalAlignment ( CENTER ) ;

Fix:
if ( ( ( alertAux . getAttack ( ) ) != null ) && ( ! ( alertAux . getAttack ( ) . isEmpty ( ) ) ) ) {